Mat



FIG. 1 is a top perspective view of the mat of the present invention;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof, the left side elevational view being identical thereto;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a front elevational view thereof, the rear elevational view being identical thereto. 

CLAIM The ornamental design for a mat, as shown and described. 